I know P0441 is "EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW" and P0404 is "EGR OPEN POSITION PERFORMANCE". I have cleaned the EGR and it didn't seem to be carboned up at all and it did seem to be moving freely, but I have still been getting the P0404 code occasionally. I have been gettting the P0441 much more frequently and I have been smelling exhaust fumes a bit inside the car. The car has been misfiring on occasion, not regularly, and has even backfired a few times. I have been getting the B0533 fuel sensor code regularly now too. I am not sure if all of this paints a clear picture that points to anything in particular, but I haven't a clue what to do at this point. Any information would be most appreciated.